As you go through this article, you will see a lot of links to more detailed information than is given in the main text. These links are indicated like this and the extra material will appear down here. Check them out if you want to know more about something, and resize the two windows as you feel is appropriate.

If you want to check out everything, here's a complete list of the footnotes in this new article.

Also, this article uses some of the footnotes from the previous one, Zigzagging Through A Strange Universe. They are indicated like this. Here's the list of all of those as well.